Concerning this item Ultra Plus semi-permanent lash glue dries quickly—in two to three seconds. LONG-LASTING: Your lash clients will adore the outcomes and return time and time again with a strong 7-week retention. LOW VISCOSITY GLUE | The Ultra Plus eyelash glue's thin viscosity enables you to measure out the exact amount of adhesive. No clumpy or sticky outcomes PREMADE & CLASSIC VOLUME FAN: BL Ultra PLUS eyelash extension glue is ideal for those who prefer premade volume and classic styles. USE ONLY FOR EYELASH EXTENSIONS - DO NOT USE AS A Cluster Lash Adhesive or with drugstore strip lashes. Use of this eyelash glue on oneself is not advised. It is only advised for lash technicians and artists with professional experience.